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Network equipment and method for distributing its peripheral device interconnection resources

A technology of network equipment and allocation method, which is applied in the direction of data exchange network, instruments, electrical components, etc., can solve the problems of inconvenient management, non-uniform allocation of memory space and waste of storage space, and achieve the effect of avoiding waste and simplifying memory management

Active Publication Date: 2007-06-27
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] What the present invention aims to solve is the inconvenient management caused by the floating address space of PCI devices in the prior art and the waste of storage space caused by non-uniform allocation of memory space to PCI devices

Method used

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  • Network equipment and method for distributing its peripheral device interconnection resources
  • Network equipment and method for distributing its peripheral device interconnection resources
  • Network equipment and method for distributing its peripheral device interconnection resources

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Embodiment Construction

[0037] The PCI bus architecture is a hierarchical architecture. As shown in Figure 1, the CPU is connected to the main PCI bus -- bus 0 through the Host-PCI bridge. Except for position M, position 1 to position N are each PCI interface on the bus 0. The PCI interface is the connection interface reserved on the bus to be connected to the PCI device. It is usually a PCI slot for inserting an expansion card, or it may be other conforming The connection interface of the PCI specification. At the position M, the PCI bridge connects the bus L and the bus 0. At this time, the bus 0 is the upstream bus of the PCI bridge, and the bus L is the downstream bus of the PCI bridge. Positions (N+1) to (N+K) are PCI interfaces on bus L. Each free PCI interface in the figure can be used to connect PCI devices, which can be a single PCI device, or a combination of more than one PCI device, or a PCI bridge device, including a PCI bridge and on its downstream bus A PCI device is connected.

[0...

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Abstract

The distribution method of PCI resource in network equipment includes the following steps: defining position mark of PCI interface in bus framework; homogeneously distributing PCI resource to PCI interface and making the position mark and distributed PCI resource have fixed correspondent relationship. Said invention also discloses a network equipment using the above-mentioned method.

Description

technical field [0001] The invention relates to a processor system used in network equipment, in particular to a method for allocating interconnection resources of peripheral devices in the network equipment and the network equipment applying the method. Background technique [0002] The development of the network puts forward higher requirements on the functions of the network equipment, and the CPU (Central Process Unit, central processing unit) system is more and more widely used. In a CPU system of a network device, PCI (Peripheral Component Interconnect, peripheral device interconnection) is a commonly used bus structure. The PCI bus is a high-performance 32 / 64-bit bus with multiple address lines and data lines, which is used as an interconnect structure between highly integrated peripheral control devices, peripheral plug-in boards, and processors / memory. [0003] The prerequisite for the normal operation of PCI devices is to get correct initialization. The most impor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F9/46H04L12/24
Inventor 李玉峰
Owner NEW H3C TECH CO LTD